About Catherine R. Nielsen

Catherine Nielsen is an experienced food and drug attorney who counsels domestic and foreign corporations on the regulatory compliance of food additives, food contact materials, and drug and medical device packaging before the U.S. Food and Drug Administration (FDA), as well as its international counterparts, including in Canada, Europe, Central and South America, and the Pacific Rim.

Catherine brings innovative legal and sound scientific strategies to clients seeking to achieve broadened markets for their products, assisting companies in obtaining explicit regulatory listings of packaging components (such as polymers, additives, coatings, printing inks, adhesives, and polymer production aids), food additives, and color additives in global jurisdictions, including the United States (U.S.), MERCOSUR, and the European Union (EU).

Catherine helps food and food contact companies assess challenging adulteration issues and advises on potential recalls. In addition, she counsels clients on compliance with California’s Proposition 65 and the Coalition on the Northeastern Governors “Toxics in Packaging” legislation, in addition to other state legislation dealing with toxic substance exposure issues.

Catherine is a contributing author to packaginglaw.com, as well as related industry publications, and is frequently invited to speak at international food contact conferences.

Insights & In the News

Printing Inks in Europe - Caught in a Time Warp

08.05.2019

Regulation of Food-Contact Materials in Latin America (Part II)

07.15.2019
Publication

Regulation of Food-Contact Materials in Latin America (Part 1)

06.03.2019
Publication

More Insights

Best Law Firms Features Keller and Heckman in 2026 Edition

Press Release
11.06.2025

 

Awards

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Services

Areas of Law

  • Other 17
    • Californias Proposition 65
    • Cosmetics
    • Food and Drug
    • Food and Drug Packaging
    • Health & Safety Compliance Audit
    • International Regulatory Affairs
    • Medical Devices
    • Pharmaceuticals
    • Trade and Professional Associations
    • Chemicals and Plastics
    • Consumer Products and Retail
    • Digital Media, Technology, and Telecommunications
    • Energy, Infrastructure, and Transportation
    • Food & Life Sciences
    • Packaging
    • Tobacco and E-Vapor
    • Trade Associations

Practice Details

  • Firm Information
    Position
    Partner
    Firm Name
    Keller and Heckman LLP
  • Representative Cases & Transactions
    Cases
    Representative Matters: Assisted multiple plastics manufacturers in conducting risk assessments of non-intentionally added substances/impurities in Europe
    in the U.S., respectively
    Achieved multiple clearances of additives, polymers,
    can coatings through the successful prosecution of numerous Food Contact Notifications (FCNs) in the U.S.
    Audited the regulatory compliance of a client's products for sales into food
    drug packaging in the U.S.
    Canada, based on a review of client's
    suppliers' records, formulations,
    compliance statements
    Guided a major polymer producer in communications with FDA on changes in manufacture to a food contact substance, avoiding the need for a new FCN submission
    Counseled a major producer of a food contact polymer on its recall obligations
    strategy, in the wake of a significant leak in a processing chemical during production
    Achieved FDA regulatory compliance of a color additive for cosmetic applications under Part 74 of FDA's regulations
    Oversaw the generation of a No Significant Risk Level (NSRL) under California Proposition 65, in the absence of an Office of Environmental Health Hazard Assessment (OEHHA) level,
    evaluated compliance of resin product with Prop. 65 based on that assessment
    Conducted training seminars for clients on food contact regulations in the U.S., Europe, China, MERCOSUR,
    India

Experience

  • Bar Admission & Memberships
    Admissions
    1987, Virginia
    1989, District of Columbia
    Memberships

    Memberships

    •American Bar Association (ABA), Natural Resources & Environment Section
    •Food and Drug Law Institute (FDLI)

  • Education & Certifications
    Law School
    University of Virginia
    Class of 1987
    J.D.
    Other Education
    University of Alabama
    Class of 1984
    B.A.
    summa cum laude

Activity

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Attorneys FAQs

  • Is this attorney admitted to the bar in more than one state?
    Yes, Catherine R. Nielsen is admitted to practice in District of Columbia and Virginia.
  • Is this attorney Martindale-Hubbell Peer Review rated?
    Yes, Catherine R. Nielsen has a 4.4 Peer Rating from Martindale-Hubbell.
  • How many attorneys are in this law firm?
    Keller and Heckman LLP has 80 attorneys at this location.
  • What law school did this attorney attend?
    Catherine R. Nielsen attended University of Virginia.
  • What year was this attorney's law firm established?
    Keller and Heckman LLP was established in 1962.